Reddit mentions of Modern Calligraphy and Hand Lettering: A Mark-Making Workbook for Crafters, Cardmakers, and Journal Artists

First of all you NEED this book, it has it all like seriously all,the tools the strokes the history - the chapter on brush lettering alone is worth the purchase.
(in case the link doesn't work the book is called Modern Calligraphy and Hand Lettering by Lisa Engelbercht)

http://www.amazon.com/Modern-Calligraphy-Hand-Lettering-Mark-Making/dp/1592536441

Then you need to watch this series of videos by Eliza Holliday, she shows the dynamics of the process and keeps it fairly simple and easy to understand - though there are others i found this one to be the most useful.

http://www.youtube.com/watch?v=uIxiW_aMiF8

And then you need a fuckton of practice because the Pentel Pocket brush can be a little bitch sometimes but gets the job done - also you might want to get a couple of other brushpens along the way just to make sure you can control all types and be efficent with any tool.


Hope this helps